Collagen is the most abundant protein in the human body and a key constituent of skin, joints, bones, blood vessels, organs and more. The word “collagen" is derived from kolla, the Greek word for glue. Collagen is literally the substance that binds us together. It forms an extensive net-like framework throughout the inner body and imparts shape and structural strength to virtually every tissue. Collagen is a protein that has unique 18 amino acids that profiles an abundance of glycine, proline and hydroxyproline. In fact, collagen is the only known source of hydroxyproline, which is believed to help stimulate the body’s own collagen production.